US Patent Issued to Nippon Kayaku on April 29 for "Thermosensitive recording material" (Japanese Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,285,962, issued on April 29, was assigned to Nippon Kayaku K.K. (Tokyo).

"Thermosensitive recording material" was invented by Kousuke Shibagaki (Fukuyama, Japan), Yousuke Toda (Fukuyama, Japan) and Hidehiro Arai (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A thermosensitive recording material including a compound represented by the following formula (1):wherein, R1 to R10 each independently represent a hydrogen atom, a halogen atom, a nitro group, an amino group, an alkyl group, an alkoxy group, an aryl oxy group, an alkyl carbonyl oxy group, an aryl carbonyl oxy group, an alkyl carbonyl amino group, an aryl carbonyl amino group, an alkyl sulfon...